208 PROCEEDINGS OF THE NATIONAL MUSEUM vol. S3 



externally. Prosternal process rather wide, flat, strongly expanded 

 posteriorly. Metasternum wide, feebly declivous anteriorly. Body 

 elongate, pubescent. 



Genotype. — Sciocyrtiifms elongatus^ new species. 



This genus belongs to the tribe Cyrtinini and is related to Cyrt'nius 

 LeConte, but it differs from that genus in having the disk of the 

 pronotum distinctly tuberculate and the elytra strongly and abruptly 

 depressed on their basal halves. 



SCIOCYRTIKUS ELONGATUS, new species 



Strongly elongate, strongly convex, subopaque, dark reddish 

 brown, the base and anterior margin of pronotum, basal halves of 

 elytra, abdomen, sternum, and bases of femora, slightly paler. 



Head with the front strongly transverse, slightly convex, broadly 

 concave between the antennal tubercles, wliich are widely separated 

 and rather strongly elevated, w^ith a narrow, longitudinal groove on 

 the vertex; surface densely, rather coarsely rugose, sparsely clothed 

 with long, recumbent, brownish-yellow hairs; eyes separated from 

 each other on the top by twice the width of the upper lobe. Antenna 

 sparsely clothed with moderately long, recumbent and erect, whitish 

 hairs, the hairs slightly denser on underside of joints. 



Pronotum one- fourth longer than wide, subequal in width at base 

 and apex ; sides nearly parallel, sinuate, feebly constricted at apical 

 fourth, more strongly constricted at basal fourth ; disk strongly con- 

 vex, feebly depressed anteriorly, strongly, transversely concave at 

 basal fourth, armed with a strongly elevated, obtuse tubercle on 

 middle of disk; surface rather coarsely, densely rugose, sparsely 

 clothed with short, recumbent, yellowish and whitish hairs inter- 

 mixed. Scutelluni elongate triangular, narrowly rounded at apex, 

 nearly glabrous. 



Elytra twice as long as wide, slightly wider than pronotum ; hu- 

 meral angles nearly rectangular ; sides parallel from base to behind 

 middle, then obliquely narrowed to the tips, which are separately 

 narrowly rounded ; disk strongly convex posteriorly, abruptly de- 

 clivous at the sides, strongly, abruptly depressed on basal halves, the 

 posterior margin of the depression on each elytron extending from 

 lateral declivity at basal third obliquely backward to the sutural 

 margin at middle, and with a large, vague, basal tubercle; surface 

 coarsely, densely, irregularly punctate, sparsely, irregularly clothed 

 with moderately long, recumbent, whitisli pubescence, which is 

 denser and forms an oblique vitta on the posterior margin of the 

 basal depression, and with numerous moderately long, erect, stiff, 

 black setae or hairs on the apical halves. 



